Surgical Scissors TRIZ Cases

Open electrosurgical forceps integrate a movable cutting element within the jaw slot to sever tissue after sealing.

An electrical conductor extends through a proximal clevis to supply energy at the distal end.

Curved shank stamping prevents flexing to maintain complete blade closure and grasping force in extended surgical instruments.

Segmented end effector navigates curved lumens while maintaining rigidity, reducing instrument exchange time.

Replacing mechanical gears with hydraulic transmission reduces operating force and friction losses while maintaining precise force feedback.

A balloon dilation catheter creates controlled dissection planes within the bladder trigone tissue to disrupt afferent nerves.

A scar subcision device uses a hinge mechanism to transition a cutting edge between retracted and exposed states for controlled tissue dissection.

An insulating fluid mediates electrical energy to tissue, maintaining temperatures below 100°C to prevent desiccation and smoke generation during cutting.

A surgical instrument integrates an expandable balloon for blunt dissection with moveable jaw members for sharp tissue cutting.

Separate pivot pins on opposite sides of the centerline maximize crank angle and mechanical advantage during jaw closing.

A rod-shaped dissector integrates expandable jaws with a pressurized fluid dispensing assembly for tissue separation.

Scissor-like handle assembly with integrated thumb trigger controls ultrasonic blade pressure for precise tissue dissection.

Dual drive units enable independent lateral pivoting of the end effector, resolving maneuverability limits in minimally invasive surgery.

Segmented box joint manufacturing separates pivot area cleaning from assembly, resolving the contradiction between early joining and surface finish quality.

A neurosurgical instrument uses a push-piece actuator to control a deflectable shaft.

Adjustable set screws and guide features resolve alignment precision trade-offs in ultrasonic surgical instruments.

Asymmetric joint positioning and tine constraints align opposing cutting surfaces within a robotic surgical instrument end effector.

Antagonistic cable tensioning via idler pulleys resolves the precision trade-off in miniaturized shafts, enabling accurate distal articulation.

A laparoscopic instrument integrates a toothed bar and latch into the handgrip for one-handed operation.

A microsurgical instrument uses a bendable shaft to maintain visibility during deep tissue access.

Incising the nasal fontanel mucous membrane provides direct access to the maxillary sinus without bone breakage or nerve damage.

A segmented medical instrument shaft with articulation cables enables precise end effector manipulation.

Widened proximal cam-slots enable end effector rotation through rigid bends while maintaining cutting precision.

A four-jawed laparoscopic instrument merges cutting and grasping functions to eliminate frequent tool interchange during procedures.

A laparoscopic shaft uses a detachable loader to attach end effectors in vivo.

A needlescopic scissor end effector uses a cam bushing to convert rotational motion into precise reciprocating linear blade actuation.

A unitary endoscopic cannula integrates dissection, sealing, and severing functions using moveable cutting portions biased by an elastic member.

A pivoting end-effector integrates cutting blades and grasping surfaces into a single surgical tool.

Converting rotation to reciprocating motion eliminates moment forces, enabling flat surface creation while reducing soft tissue injury.

A single-piece propelling body with a guiding groove channels surgical instruments through the cervical canal along the hysteroscope.

A stopper mechanism restricts relative movement between pivotable scissor elements in endoscopic surgical tools.

Segmented blade holders enable manual replacement of high-wear cutting components, extending end effector useful life.

A laparoscopic scissor design uses a distal slot actuation mechanism to lower blade operational height within the shaft diameter.

Sliding blade sheath enables versatile tissue cutting and sealing while reducing piercing risk through dynamic configuration.

A surgical gripper converts push-pull actuation into open-close motion using a bearing engaging a jaw slot, preventing galling in small-diameter instruments.

Segmented jaw counter portions isolate cutting pressure from sealing zones, preventing bleeding between cut and uncut tissue regions.

Stair-step electrode geometry concentrates RF energy obliquely, minimizing thermal spread and collateral tissue damage during sealing.

Articulated surgical instrument with elastically bendable blade portions for precise cutting actions.

Coaxial hollow cables and helical coils enable precise distal blade orientation in long flexible endoscopes, overcoming rigid shaft limitations.

A surgical hand tool uses friction-fit jaws and handles for quick manual interchangeability.

Three thrust elements articulate the end effector on a bearing element, resolving limited maneuverability and loss of haptic feedback.

Adjustable grip arms on a surgical instrument handle resolve the trade-off between fixed simplicity and user comfort during reciprocating movements.

A shaft connecting device uses segmented engagement structures to join replaceable working inserts via a bayonet mechanism.

Segmented thrust elements pivot connecting sections to restore haptic feedback while increasing distal maneuverability.

Segmented jaw locking enables seamless switching between grasping and cutting, reducing tool interchange time.

Segmenting the manipulator into replaceable rod assemblies reduces failure points from delicate wire systems and lowers medical waste.

A surgical instrument tool head uses a universal joint and pinion-rack mechanism to transmit rotational motion for precise lateral movement.

Segmented levers in a nested scissor hinge convert pivoting to axial motion, resolving transmission ratio limits and contamination risks.